/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.api.java.operators.join;
import org.apache.flink.annotation.Public;
import org.apache.flink.api.common.functions.FlatJoinFunction;
import org.apache.flink.api.common.functions.JoinFunction;
import org.apache.flink.api.java.operators.JoinOperator;
/**
* A Join transformation that needs to be finished by specifying either a
* {@link JoinFunction} or a {@link FlatJoinFunction} before it can be used as an input
* to other operators.
*
* @param <I1> The type of the first input DataSet of the Join transformation.
* @param <I2> The type of the second input DataSet of the Join transformation.
*/
@Public
public interface JoinFunctionAssigner<I1, I2> {
<R> JoinOperator<I1, I2, R> with(JoinFunction<I1, I2, R> joinFunction);
<R> JoinOperator<I1, I2, R> with(FlatJoinFunction<I1, I2, R> joinFunction);
}